Lubricator



(No Model.) B. MCCOY LUBRIGATOR. No. 320,379. Patented June 16, 1885.

N. PETERS, pnqwulhn bqr. Washington. a. c.

FFICEo ELlJAH MCCOY, OF DETROIT, MICHIGAN.

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 320,379, dated June 16,1885.

Application filed May 1, 1885.

To all whom it may concern Be it known that I, ELIJAH McUoY, of Detroit,county of \Vayne, State of Michigan, have invented a new and usefulImprovement in Lubricators; and Ideclare thei'ollowing to be a full,clear, and exact description of the same, such as will enable othersskilled in the art to which it pertains to make and use it, referencebeing; had to the accompanying drawings, which form a part of thisspecification.

My invention relates to the combinations of devices and applianceshereinafter specified, and more particularly pointed outin the claims.

My invention is designed as an improvement upon a lubricator patented toClarence B. Hodges and myself, dated November 18, 1884, No. 308,258.

In the drawings, Figure 1 represents a view of the condenser at the topof the lubricator, constructed in other respects as described in thesaid patent. Fi s. 2 and 3 are variations.

My invention consists more particularly in continuing the interiorequalizing pipe or conduit up past the point at which steam is admittedfrom the boiler to the condenser, as will be more particularlydescribed.

A represents the body of the lubricator. B is its condenser. U is anequalizing pipe or coiuluit,designed to afford a back-pressure into thedischarge-orifice of the lubricator, to new tralize the effect of thedirect pressure,

through the condenser, all of which is described in said above-namedpatent. In the said patent, however, the said equalizing pipe or conduitstarts from a point within the condenser and below the point at whichsteam enters from the boiler. Frequently, however, a boiler, by primingor for some other reason, would till up the condenser with water, andthe water would pass over into and down through the said conduit.

It is the object. of my invention to overcome this difficulty. This 1accomplish by forming at the top of the condenser B an elongated neck,B, which projects some distance above the condenser, and I continue theconduit or pipe 0 up nearly to the top of thisneck. Now, instead ofleading the pipe up from the boiler directly into the top of this neck,the said pipe taps the neck at a point some distance below the top andbelow the upper end of the said (No model.)

conduit 0. This pipe D, leading oft laterally from the neck B, taps thesteam-space of the boiler at a point on or below this level. The resultis, that steam entering the boiler cannot by condensation raise thewater so high as to cause it to enter and pass down the conduit 0. So,also, should the boiler by priming cause water to pass in through thepipe 1), it would tlow back through the pipe into the boiler as soon asit had reached the level of the pipe where it taps theneck' B.

The dit'ticulty which arose by water passing down the conduit 0, asshown in the former patent, was that the water would fill up the spaceabove the water in the sight-feed tube, and would make a continuouscolumn of water back and up to the top of this conduit 0. This column ofwater would be as high, or substantially as high, as the direct column,which, operating through the condenser and oilchamber, serves to drivethe oil up through the sight-feed chamber. The effect was therefore toneutralize this pressure by a corre sponding back pressure, and so stopor nearly stop the drop-feed of the lubrieator. The in- I veution heredescribed, it is apparent, overcomes all this difticulty, and insuresthat there shall always be a passage of direct steam down through theconduit 0, and that no condense water or prime water shall pass downthrough the conduit.

It is apparent that this invention is equally applicable whether theequalizing-pipe is located on the inside or upon the outside of the bodyof the lubricator. Thus, as shown in Fig. 2, the equalizing-pipe 0 maybe started from a point at or near the top of the neck B and passed downupon the outside of the body of the lubricator instead of being;embraced wholly or partially within the body of the lubricator, or, asshowniu Fig. 3, the neck B,

which rises above the point of attachment of the steam-pipe to thelubricator, might rise from the steam pipe, these devices being simplymechanical variations, all of which embody the principle of myinvention.

\Vhat lclaim is 1. In a lubricator, a steam equalizing pipe or conduit,said pipe or conduit rising to a point higher than the level of thesteam-pipe which leads from the boiler to the condenser, substantiallyas described.

2. In a lubricator, a steam equalizing pipe 4. In a lubricator, a steamequalizing pipe or conduit, said lubricator provided with an or conduitlocated wholly or partially within elongated neck, B, at its top to ornear the the body of the lubricator, said lubricator protop of whichsaid equalizingpipe extends, said I vided with an elongated neck, B, atits top to 5 neck provided at a distance below its top with 1 or nearthe top of which said equalizing-pipe 20 means for receiving asteam-pipe, whereby extends, said neck provided at a distance besteammay be admitted from the boiler, sublow its top with means for receivinga steamstantially as described. i pipe, whereby steam may be admittedfrom 3. In a lubrica-tor, a steam equalizing pipe i the boiler,substantially as described. 10 or conduit located wholly or partiallywithin In testimony whereof-I sign this specifica- 25 the body of thelubricator, said pipe or tion in the presence of two witnesses.

conduit rising to a point higher than the. ELIJAH MCCOY. levtl of thesteam-pipe which leads from Vitnesses: the boiler to the condenstr,substantially 118, N. S. WRIGHT,

.15 described. I SAMUEL E. THOMAS.

